Tooling
01
Injection mold Packaging mold Cosmetic mold multi-cavity mold flip mold automatic thread release mold three plate mold
Product introduction
The injection parts of the packaging mold are used for daily necessities, usually a relatively large amount, low added value, and cheap, according to the design and manufacture of multi-cavity molds, such as 36 cavities 64 cavities 128 cavities, etc., the appearance and size of the product should be consistent, and the use of the mold parts needs to be interchangeable, and the mold work should be smooth. During the injection molding production process, there is a cavity production abnormal. Affect the entire mold production. Mold cooling uniform, shorten the production cycle, reduce production costs.
Production technology
Packaging products have high appearance requirements, usually need to be polished, to use highly polished mold steel, the appearance of the surface can not have rubber marks, the front and back mold need to be accurately positioned, the center point as the benchmark has a certain gap, positioning is not accurate, usually use unilateral positioning, and then use the diagonal wedge to lock, so that the positioning accuracy is high, there is no gap, mold production is stable, It is a common positioning method for mass production molds.
Production profile
The appearance of the product is the polishing surface, can not have the glue point, in the mold design, combined with the shape characteristics of the product, the product inner ring has internal threads, the internal thread needs to be rotated backward release, the product glue point design is in the center of the product inside, the fine water mouth mold points the glue, the product material is PP material, good fluidity, low molding temperature, the glue way is just right. There is a gear on the screw core, the rack drives the gear, the cylinder drives the rack, the external oil circuit of the injection molding machine connects the cylinder, before testing the mold, the mold worker first tests the smoothness of the movement of the rack and gear, this mold structure, there needs to be accurate positioning between each plate, the template has a positioning pin hole. The accuracy of the assembly is guaranteed.
Product design
For plastic products with internal threads, due to the limitation of the shape of the thread, the mold cannot be forced out. The screw core needs to be rotated backward, but the product cannot be rotated, which requires the anti-rotating structure to be made when the product is designed. This anti-rotating structure is usually bone position or groove. Product design should fully consider the structure of the mold, to design a reasonable touch Angle, so as to avoid the product is scratched, can not be released, design a reasonable glue thickness, usually bone thickness is the basic glue thickness of about 0.6.
